Preparation and application of graphene-based wearable sensors

With the development of digital healthcare technology, the demand for non-invasive monitoring of human health is rapidly increasing. In recent years, the research and application of timely, economical, and easy-to-operate wearable sensing devices have attracted much attention. Among recent studies, graphene has been widely used to improve the sensing performance of wearable sensors due to its advantages in mechanical, electrical, and thermal properties. This review mainly focuses on summarizing graphene and its derivative-based wearable sensors and their latest developments in personal health monitoring. We will first introduce the novel structure and sensing mechanism of different types of graphene sensors. Then, we summarize the latest applications of the graphene wearable sensors in human health monitoring, including human activity, heart rate, pulse, electrophysiological signal, and electronic skin. Finally, the future challenges and prospects of graphene wearable devices will be discussed.